The only difference that I've ever heard of is the appearance. I've said this many times before, but I really prefer the look. Few exceptions in aesthetics to me would be Martin Logan or REL etc, but I don't find any extra value in their performance. So. What do you think would fit into your space, visually?
Doesn't matter in my space. I have a 3'w x 3'd x 8' tall area for each subwoofer to fit into. although the less deep the better really so it sticks out less but it wouldn't be a deal breaker. The PC version is 16" deep so that would work out well. Its taller so it from a pure "hey look at me" might command more attention haha.